Advanced search

Found 4 essays matching the above criteria.

  1. 1. Reducing the dynamical diffraction effects in EMCD by electron beam precession

    University essay from

    Author : Arvid Forsberg; [2020]
    Keywords : electron microscope; TEM; transmission electron microscope; EMCD; electron energy-loss magnetic chiral dichroism; magnetism; precession electron diffraction; crystals; crystallography;

    Abstract : Dynamical effects are known to reduce the signal to noise ratio in EMCD measurements making them highly dependent on sample thickness. Precession of the electron beam has been shown to reduce these effects in ordinary crystallography. READ MORE

  3. 2. Programming a TEM for magnetic measurements : DMscript code for acquiring EMCD data in a single scan with a q-E STEM setup

    University essay from Uppsala universitet/Tillämpad materialvetenskap

    Author : Linus Schönström; [2016]
    Keywords : EMCD; magnetic dichroism; q-E STEM; DMscript; DigitalMicrograph scripting; custom STEM acquisition; SI hookup system; Spectrum Imaging hookups;

    Abstract : Code written in the DigitalMicrograph® scripting language enables a new experimental design for acquiring the magnetic dichroism in EELS. Called the q-E STEM setup, it provides simultaneous acquisition of the dichroic pairs of spectra (eliminating major error sources) while preserving the real-space resolution of STEM. READ MORE

  4. 3. Structural elucidation of mRNA(Sirt1)-microRNA 34a complex

    University essay from KTH/Skolan för teknikvetenskaplig kommunikation och lärande (ECE)

    Author : Mona Farshchian; [2015]
    Keywords : mRNA Sirt1 ; miR-34a; in vitro transcription; gel electrophoresis; CD spectroscopy; NMR; cancer regulation via p53; HPLC; mRNA Sirt1 ; miR-34a; in vitro transkription; gel elektroforesis; CD spektroskopi; NMR; cancer regulering via p53; HPLC;

    Abstract : The aim of this thesis is to understand RNA-RNA interactions steering cellular functions, as in the case of this thesis the structure of mRNA(Sirt1) in complex with microRNA-34a (miR-34a). MiR-34a regulates the cancer protein p53 via Sirt1 modulation. READ MORE

  5. 4. Ro52 : Structure and interactions of constructs of RING and B-box

    University essay from Linköpings universitet/Teknisk biologi; Linköpings universitet/Tekniska högskolan

    Author : Emmy Österberg; [2014]
    Keywords : Structural biology; Ro52; TRIM21; Ubiquitination; Western blot; Protein expression; Protein purification;

    Abstract : The ubiquitination process is vital to maintain the protein homeostasis in the cell. With high specificity it regulates degradation of proteins by tagging them with a small protein called ubiquitin. Four proteins are involved to perform the process and in this thesis one of these proteins is studied. READ MORE